L
USER’S INFORMATION MANUA
MODEL 374RAN
OIL FURNACE
NOTE TO INSTALLER:
This manual must be left with the equipment user.
!
WARNING: If the information in this manual
is not followed exactly, a fire or explosion could
result causing property damage, personal injury or
loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL OIL:
— Do not try to light any appliance.
— Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your fuel supplier from a
neighbor’s phone. Follow the fuel supplier’s
instructions.
• If you cannot reach your fuel supplier, call the
fire department.
— Installation and service must be performed by a
qualified installer, service agency or the fuel
supplier.
Do not use this furnace if any part has been under
water. Immediately call a qualified service technician to inspect the furnace and to replace any part
of the control system and any oil control which
has been under water.
!
WARNING: CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
Carbon Monoxide is invisible, odorless, and toxic! Bryant recommends a carbon monoxide
alarm in your home, even if you do not own a gas appliance. Locate the carbon monoxide
alarm in the living area of your home and away from gas appliances and doorways to
attached garages. Follow the alarm manufacturer’s instruction included with the alarm.
WELCOME TO A
NEW GENERATION
OF COMFORT
Congratulations! In light of rising
energy costs, the 374RAN Variable
Speed Multipoise Oil Furnace is
among the soundest investments
today’s homeowner can make.
Your new furnace is truly a triumph of technology in home
heating. A unique silencer within
the heat exchanger, insulated cabinet, and rubber blower mounts
make it among the quietest units
on the market. Variable speed
technology creates more comfortable heating and cooling cycles,
allows you to economically run a
constant fan, and eliminates temperature difference throughout the
house. The combustion chamber
is stainless steel for long life and
it heats up quickly resulting in
enhanced comfort and energy
efficiency.
With only minimal care, your
new furnace will deliver many
years of money-saving home
comfort and enjoyment. Spend
just a few minutes with this manual to learn the operation of your
new furnace and the small
amount of maintenance it takes to
help keep it operating at peak efficiency year after year.
1
MODEL 374RAN MULTIPOISE FURNACE
INSTALLATION DATA
Date Installed
Dealer Name
Address
City
State Zip
Telephone
FURNACE
Product No.
Model No.
Serial No.
SPLIT-SYSTEM
OUTDOOR UNIT:
Product No.
Model No.
Serial No.
INDOOR COIL:
Product No.
Model No.
Serial No.
ACCESSORIES
Product No.
Model No.
Serial No.
2
FURNACE COMPONENTS
5
4
3
2
6
7
8
9
10
1
13, 14SEE NOTES:
Left side, right side, or bottom.
1
Variable Speed blower circulates air across the
heat exchanger to transfer heat into the home.
2
Stainless steel combustion chamber/primary
heat exchanger.
3
Unique silencer system reduces combustion
noise.
4
Heat exchanger designed and shaped to efficiently transfer heat from furnace into the home.
11
12
8
Reversible door provides easy access to burner
and controls.
9
High-performance oil burner.
10
Adjustable electronic fan control (inside) with
low-voltage electrical terminal strip for easy
connection of thermostat, cooling control, electronic air cleaner, and humidifier.
11
Access door to air filters and blower.
2
5
Fully insulated internal walls to minimize heat
loss.
6
Supply-air plenum.
7
High limit control to prevent overtemperature
operation.
12
Air filter (field-supplied).
13
Return-air plenum.
3
!!!
3
IMPORTANT FACTS
Your furnace must have adequate
airflow for efficient combustion
and safe ventilation. Do not
enclose it in an airtight room or
“seal” it behind solid doors.
To minimize the possibility of
serious personal injury, fire, furnace damage, or improper operation,
carefully follow these
safety rules:
FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors and liquids in the
vicinity of this or any other appliance.
• Do not cover the furnace, store
trash or debris near it, or in any way
block the flow of fresh air to the
unit.
• Combustion air must be clean and
not contaminated with chlorine or
fluorine. These compounds are
present in many products around
the home, such as: water softener
salts, laundry bleaches, detergents,
adhesives, paints, varnishes, paint
strippers, waxes, and plastics.
Make sure the combustion air for
your furnace does not contain any
of these compounds. During remodeling be sure the combustion
air is fresh and uncontaminated. If
air with vapors of these compounds is burned in your furnace,
the heat exchangers and metal vent
system may deteriorate.
NOTE:
any part has been under water.
Do not use this furnace if
Immediately call a qualified service technician to inspect the furnace and to replace any part of the
control system, electrical components, and any oil control which
has been under water.
NOTE:
agency must use only factoryauthorized replacement parts, kits,
and accessories when servicing
this product.
The furnace burner control has a
safety device which must be manually reset. If the furnace is left
unattended for an extended period
of time, have it checked periodically for proper operation. This
precaution will prevent problems
associated with no heat, such as
frozen water pipes, etc.
The qualified installer or
SAFETY
CONSIDERATIONS
Installing and servicing of heating
equipment can be hazardous due to
oil and electrical components.
Only trained and qualified personnel should install, repair, or service
heating equipment.
Untrained personnel can perform
basic maintenance functions such as
cleaning and replacing air filters. All
other operations must be performed
by trained service personnel.
Observe safety precautions in this
manual, on tags, and on labels
attached to the furnace and other
safety precautions that may apply.
Recognize safety information.
This is the safety-alert symbol .
When you see this symbol on the
furnace and in instructions or manuals, be alert to the potential for
personal injury.
Understand the signal words —
DANGER, WARNING, and CAUTION. These words are used with
the safety-alert symbol. DANGER
identifies the most serious hazards
which
result in severe personal
will
injury or death. WARNING signifies hazards which
personal injury or death. CAUTION is used to identify unsafe
practices which
may
4
could
result in
result in
minor personal injury or product
and property damage. NOTE is
used to highlight suggestions which
will result in enhanced installation,
reliability or operation.
WARNING
FIRE, EXPLOSION, CARBON
MONOXIDE POISONING
HAZARD
Failure to follow this warning
could lead to sooting, fire, explosion, and/or severe bodily
harm.
For use with grade 2 Fuel Oil
maximum. Do not use Gasoline, Crankcase Oil, or any Oil
containing Gasoline!
CAUTION
FIRE AND UNIT OVERHEAT
HAZARD
Failure to follow this caution
may result in unit damage.
Never burn garbage or paper
in the heating system and
never leave rags, paper, or
any flammable items around
the unit.
STARTING YOUR
FURNACE
This appliance is equipped with an
ignition device which automatically lights the burner each time the
thermostat starts your furnace.
low these important safeguards:
WARNING
EXPLOSION HAZARD
Failure to follow this warning
could result in property dam-
!
age or personal injury or
death.
This furnace is equipped with
a constant type primary ignition system. DO NOT ATTEMPT TO LIGHT WITH A
MATCH.
Fol-
4
!
DANGER
ELECTRICAL SHOCK HAZARD HIGH VOLTAGE AT
IGNITER.
Severe electrical shock, personal injury, or death could
result.
• If a suspected malfunction occurs
with your oil control system, such as
the burner not lighting when it
should, refer to the “Shutting Down
Your Furnace” section and call your
dealer as soon as possible.
5
6
7
6. Open oil supply valve.
(See Fig. 7.)
The control CANNOT be reset
from the room thermostat.
10. Set your thermostat to the temperature that satisfies your comfort requirements. SUGGESTION: Setting the thermostat
back a few degrees and compensating for the difference with
warmer clothing can make a big
difference in your fuel consumption on extremely cold days. The
few degrees at the top of your
thermostat “comfort level” are
the most costly degrees to obtain.
CHECK AIR FILTER:
Before
attempting to start your furnace, be
sure the furnace air filter is clean
and in place. See “Performing Routine Maintenance” section in this
manual. Then proceed as follows:
STEPS FOR STARTING
YOUR FURNACE
1. Open all warm air registers and
make sure that all return-air
grills are unobstructed.
2. If a humidifier is installed with
your system, open water supply
valve.
3. Make sure blower access door is
secured in place.
4. Set your room thermostat to
lowest temperature setting.
(See Fig. 5.)
®
5. Turn on electric power to
furnace. (See Fig. 6.)
7. Check all connections to ensure
there are no leaks.
8. Set room thermostat to a temperature slightly above room
temperature. This will automatically signal the furnace to
start.
9. When the thermostat calls for
heat, power from the transformer energizes the fan control
board. The fan control energizes the ignition control. The
ignition control will automatically light the burner.
The electronic fan control automatically turns on the blower.
The air moved over the heat exchanger by the blower is
warmed and passes through the
ducts to the room registers.
This unit is equipped with continuous ignition control. If the
main burner does not ignite
within 30 sec from the call for
heat, the control will lock out.
The red button on top of the
control must be depressed for 3
sec in order to reset the control.
When room temperature drops
below temperature selected on
the thermostat, the furnace will
be switched on automatically.
When room temperature reaches
the degree selected on the thermostat, the furnace will be
switched off automatically.
Some thermostats have a FAN
mode with 2 selections, AUTO
and ON. When thermostat is set
to AUTO, the furnace blower
cycles on and off, controlled by
the thermostat. In ON mode,
the furnace blower runs continuously. This keeps the temperature level in your home more
evenly balanced. It also continuously filters indoor air.
SHUTTING DOWN
YOUR FURNACE
Should you need to shut down your
furnace for service or maintenance, you will need to turn the
furnace off. The following procedures must be followed:
1. Set thermostat to lowest setting.
(See Fig. 8.)
®
8
5
2. Turn off all electrical power to
!
the furnace. (See Fig. 9.)
3. Close oil supply valve.
(See Fig. 10).
4. If applicable, turn off water supply to humidifier.
5. If furnace blower will be necessary for cooling system, remember to turn electric power back
on when needed for air conditioning.
6. If furnace is being shut down because of a malfunction, call your
dealer as soon as possible.
ALWAYS KEEP MAIN OIL
VA LVE TURNED OFF IF
BURNER IS SHUT DOWN FOR
AN EXTENDED PERIOD OF
TIME.
PERFORMING
ROUTINE
MAINTENANCE
With proper maintenance and care,
your furnace will operate economically and dependably. Instructions
for basic maintenance follow. However, before beginning maintenance,
follow these safety precautions:
9
10
!
WARNING
ELECTRICAL SHOCK
HAZARD
Failure to follow this warning
could result in personal injury or death.
Turn off all electrical power to
furnace before performing
any maintenance or service
on unit.
11
!
CAUTION
CUT HAZARD
Failure to follow this caution
may result in personal injury.
Although special care has
been taken to minimize sharp
edges, be extremely careful
when handling parts or
reaching into the furnace.
FILTERING OUT
TROUBLE
Dirty air filters will cause a loss of
airflow in your duct system. When
excessive loss of airflow occurs,
the furnace may cycle on its safety
controls. If this condition is left
unattended, the furnace will eventually lock out. It is recommended
that furnace air filters be checked
every 3 or 4 weeks and cleaned or
replaced as necessary.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution
may result in reduced unit
component life.
Never operate your furnace
without the air filters in place.
Doing so may damage the
furnace blower motor. An accumulation of dust and lint
on internal parts of your
furnace can cause a loss of
efficiency.
The air filter is installed in an external filter rack which is provided as
standard equipment with furnace.
To inspect, clean, and/or replace
air filter, follow these steps:
1. Turn off electrical supply to furnace. (See Fig. 11.)
2. Remove filter from external filter rack.
3. Inspect filter. If torn, replace it.
NOTE: If filter has been replaced
with an electronic air cleaner
(EAC), refer to the EAC Owner’s
Manual for maintenance information.
4. If filter is dirty, it must be replaced. If your furnace air filter
needs to be replaced, be sure to
use the same size and type of filter that was originally supplied.
Use furnace filter table for filter
size and filter rack flange dimensions for return air duct.
FURNACE AIR FILTER TABLE
FLANGE
OPENING
SIZE
(IN.)
15 X 23
19 X 29
If you have replaced a disposable
filter with a permanent washable
filter, it may be cleaned if it is dirty.
FILTER
SIZE
(IN.)
Model Size 105
16 X 24 X 1
or
16 X 25 X 1
Model Size 120
18 X 30 X 1
or
20 X 30 X 1
FILTER
TYPE
Disposable
Disposable
6
Wash filter in a sink, bathtub, or
outside with a garden hose. Always
use cold tap water. A mild liquid
detergent may be used if necessary.
Spray water through filter in the
opposite direction of airflow.
Allow filter to dry.
5. Re-install clean air filter.
6. Turn on electrical supply to
furnace.
A CHECK-UP
CHECKLIST
Your furnace represents an important investment in your family’s
comfort and your home’s value. To
keep it performing properly and as
a preventative to future problems,
have a trained service specialist
give your furnace a professional
check-up annually. The following
checklist can be used as a guideline
to proper service:
• Check flue and secondary tube
passage ways including chimney —
clean if necessary.
• Change oil filter.
• Change nozzle.
• Check and adjust combustion and
draft.
• Inspect all vent piping inside structure for deterioration and vent terminations outside the structure for
blockage.
• Check oil pipes leading to and
inside of your furnace for leaks.
• Inspect and clean the blower motor
and wheel.
• Inspect and change or clean air filter if necessary.
• Inspect all supply- and return-air
ducts for obstructions, air leaks, and
insulation. Remedy any problem
when necessary.
• Inspect the return-air duct connections at the furnace to ensure it is
physically sound, sealed to the furnace casing, and terminates outside
the space containing the furnace.
• Inspect electrical wiring, connections, and components for loose
connections.
• Examine the physical support of
the furnace. Support should be
sound with no cracks, sagging, gaps,
etc. around the base.
• Check furnace for any obvious
signs of deterioration.
BEFORE YOU REQUEST
A SERVICE CALL
If your furnace is not operating or
not performing properly, you may
save the expense of a service call
by checking a few things yourself
before calling for service.
FOR INSUFFICIENT AIRFLOW:
• Check for dirty air filters.
• Check for blocked return-air or
supply-air grilles throughout your
home. Ensure they are open and
unobstructed.
If problem still exists, call your
dealer for service.
IF FURNACE FAILS TO
OPERATE:
Follow this checklist step by step,
advancing to the next step only if
furnace fails to start.
• Check thermostat for proper temperature. Is thermostat set above
room temperature?
• Is thermostat set on HEAT?
• Check fuses and circuit breakers.
Is electrical supply on?
• Is valve in oil supply pipe in open
position?
• Is the ignition control on the burner not in lockout? The red button on
top of the control must be depressed
for 3 sec in order to reset the control.
• Check for obstructions around the
vent termination.
If furnace still fails to operate, call
your service representative. For
your convenience, record furnace
product and serial numbers on page
2. Should you ever require service,
you will have ready access to the
information needed by your service
representative.
7
© 2004 Bryant Heating & Cooling Systems, 7310 W. Morris St. Indpls, IN 46231 Printed in U.S.A.
8
Cancels: New OM16-16
Catalog No. 5337-401 12-04
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